Road construction.



tinirnn @EATES Parana oration -JOSEPH HAY AMIES, OF PHILADELPHIA,PENNSYLVANIA, 'ASSIGNOR TO THE AMIES ASPHALT COMPANY, OF PHILADELPHIA,PENNSYLVANIA, A CORPORATION OF Specification of Letters Patent- Patentedan. 11, 1910.

SOUTH DAKOTA.

ROAD CONSTRUCTION.

9&5399.

No Drawing.

To all 'whom it may concern:

Be it known that I, JOSEPH HAY Antes, a citizen of the United States,reslding at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented a certain new and useful Improvement in RoadConstruction, of which the following is'a specification.

My improvement has reference to the construction of country roads, andrelates in particular to the use therefor of stones such as are abundantin the locality where'such are being built.

My method of construction follows :-The rock, procured at, or contiguousto the road I am about to construct, is .blasted small enough to admitof breaking with sledge and napping hammers. These blasted stones arebroken to about six inches in size and are then laid on the bottom gradeandwell chinked in. If this is well done, no rolling will be required. Inow take a batch quantity of the soil readily secured from the bottom orsides of the road and mix it with crushed calcium oxid. The calcium oxidwill take up the moisture of the soil and convert it and in slackingwill pulverize the roads lumps of the soil and heat the mass to such adegree as to make it easy to mix when thus heated with asphaltic cement.I immediately place this bituminized soil on the heavy stone basedescribed. An ordinary heavy roller will be sufiicient to compress thismass and fasten it firmly to the base.

Application filed March 3, 1909. Serial No. $81,173.

I have now described a superior road construction, that will meetpresent demands. The cost of construction and maintenance will be verylow. The treatment I give the soil prepares it to receive the asphaltand this association will not rotthe asphalt as would be the result byother methods. The

calcium oxidwill take up the volatilerelements of the fluxing oils andof the asphalt and fixes them. I thus practically eliminate aging andmake my road surfacing indifferent to changes in temperature.

The process is reduced to utmost simplicity and can be adoptedby allroad builders. The proportion of asphalt to be used with any givenamount of soil cannot be exactly stated because soils differ, but itwill not vary much, by weight, from 10% of asphalt, 6% of calcium oxidand 84% of soil.

What I claim is The herein described method of building roads and thelike which consists in taking soil and mixing therewith calcium oxid,then mixing with the mass asphaltic cement and y the like and thenplacing the bituminized I name.

JOSEPH HAY AMIES.

Witnesses:

WILLIAM J. JACKSON, S. F. K0011.

In testimony whereof I hereunto sign my

